Yaskawa YASNAC PC NC Connecting Manual - Manual (Page 17)

YASNAC PCNC Connecting Manual Preface/Table of Contents
xvi
• Connect each unit’s grounding line individually to the housing or grounding plate.
See the following example:
200VAC
LF
External
Box
.
.
.
. S, V
U
V
W
CN
CN
E
E
M
F, B
Operation relay
sequence
LF AVR
Grounding at one
point (100
Ω /
less)
• Select the wire for grounding in conformance with local electrical codes.
• Be sure to connect the motor’s grounding terminal to the drive unit’s grounding terminal.
• Ground at one point. (Ground resistance 100
Ω
or less).
• Be sure to seperate the grounding line of the unit from the power unit’s grounding line.
Failure to perform correct grounding can lead to malfunction.
CAUTION